Service Guide SP-HF1100X
Version 1.0 Page 7 of 14
* Attention
Please follow the numbered sequence marked within parenthesis given in individual
Flow chat, in that this is the best-recommended sequence to rectify the problems.
1.2.1 L/R channels no sound
Problem
Analyze and
Identify the Causes
Solutions
L/R channels no sound
Broken or short circuit
Check solder points on
PCB
Defective
U1,U2,VR1,VR2,VR3,
C1,C3,C21,C22,L1,L2,
PHONE1,CON3
Speaker cable dis-connect or
speaker damaged
Re-connected speaker cable
or replace defective speakers
Check and replace
defective IC or
components
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